Tokyo, July 2025 — Japan has once again taken the lead in global technology by setting a new world record for internet speed: a jaw-dropping 402 terabits per second (Tbps). To put that into perspective, you could download the entire Netflix library — all shows, all movies — in just one second.
The breakthrough was achieved by researchers at Japan’s National Institute of Information and Communications Technology (NICT) using advanced multi-core fiber-optic technology and next-generation wavelength division multiplexing. Unlike typical commercial fiber cables, which use a single core, this innovation utilizes 19 cores in a single fiber — drastically increasing data capacity.
Why It Matters
This record isn’t just about achieving insane speeds. It represents a leap toward the next era of internet infrastructure that could support massive data requirements in industries like AI, streaming, autonomous vehicles, medical imaging, and even interplanetary communication.
With the rapid rollout of 6G trials, quantum computing, and the metaverse, demand for ultra-fast and stable internet is at an all-time high. Japan’s latest milestone lays the groundwork for a truly connected future.
What’s Next?
While this speed isn’t available to consumers just yet, it signals what’s on the horizon. Japan, already one of the world’s most tech-advanced nations, continues to pave the way for innovations that could redefine digital experiences globally.
As global players race toward faster and more efficient networks, Japan’s 402 Tbps feat is a reminder that the future of connectivity is closer than we think — and it’s faster than we ever imagined.
